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377 lines (276 loc) · 8.07 KB
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//
// AbstractNode.cpp
//
// $Id: //poco/1.2/XML/src/AbstractNode.cpp#1 $
//
// Library: XML
// Package: DOM
// Module: DOM
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/DOM/AbstractNode.h"
#include "Poco/DOM/Document.h"
#include "Poco/DOM/ChildNodesList.h"
#include "Poco/DOM/EventDispatcher.h"
#include "Poco/DOM/DOMException.h"
#include "Poco/DOM/EventException.h"
#include "Poco/DOM/DOMImplementation.h"
#include "Poco/DOM/Attr.h"
#include "Poco/XML/Name.h"
#include "Poco/DOM/AutoPtr.h"
namespace Poco {
namespace XML {
const XMLString AbstractNode::NODE_NAME = toXMLString("#node");
const XMLString AbstractNode::EMPTY_STRING;
AbstractNode::AbstractNode(Document* pOwnerDocument):
_pParent(0),
_pNext(0),
_pOwner(pOwnerDocument),
_pEventDispatcher(0)
{
}
AbstractNode::AbstractNode(Document* pOwnerDocument, const AbstractNode& node):
_pParent(0),
_pNext(0),
_pOwner(pOwnerDocument),
_pEventDispatcher(0)
{
}
AbstractNode::~AbstractNode()
{
delete _pEventDispatcher;
if (_pNext) _pNext->release();
}
void AbstractNode::autoRelease()
{
_pOwner->autoReleasePool().add(this);
}
const XMLString& AbstractNode::nodeName() const
{
return NODE_NAME;
}
const XMLString& AbstractNode::getNodeValue() const
{
return EMPTY_STRING;
}
void AbstractNode::setNodeValue(const XMLString& value)
{
throw DOMException(DOMException::NO_DATA_ALLOWED_ERR);
}
Node* AbstractNode::parentNode() const
{
return _pParent;
}
NodeList* AbstractNode::childNodes() const
{
return new ChildNodesList(this);
}
Node* AbstractNode::firstChild() const
{
return 0;
}
Node* AbstractNode::lastChild() const
{
return 0;
}
Node* AbstractNode::previousSibling() const
{
if (_pParent)
{
AbstractNode* pSibling = _pParent->_pFirstChild;
while (pSibling)
{
if (pSibling->_pNext == this) return pSibling;
pSibling = pSibling->_pNext;
}
}
return 0;
}
Node* AbstractNode::nextSibling() const
{
return _pNext;
}
NamedNodeMap* AbstractNode::attributes() const
{
return 0;
}
Document* AbstractNode::ownerDocument() const
{
return _pOwner;
}
Node* AbstractNode::insertBefore(Node* newChild, Node* refChild)
{
throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
}
Node* AbstractNode::replaceChild(Node* newChild, Node* oldChild)
{
throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
}
Node* AbstractNode::removeChild(Node* oldChild)
{
throw DOMException(DOMException::NO_MODIFICATION_ALLOWED_ERR);
}
Node* AbstractNode::appendChild(Node* newChild)
{
throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
}
bool AbstractNode::hasChildNodes() const
{
return false;
}
Node* AbstractNode::cloneNode(bool deep) const
{
return copyNode(deep, _pOwner);
}
void AbstractNode::normalize()
{
}
bool AbstractNode::isSupported(const XMLString& feature, const XMLString& version) const
{
return DOMImplementation::instance().hasFeature(feature, version);
}
const XMLString& AbstractNode::namespaceURI() const
{
return EMPTY_STRING;
}
XMLString AbstractNode::prefix() const
{
return EMPTY_STRING;
}
const XMLString& AbstractNode::localName() const
{
return EMPTY_STRING;
}
bool AbstractNode::hasAttributes() const
{
return false;
}
XMLString AbstractNode::innerText() const
{
return EMPTY_STRING;
}
void AbstractNode::addEventListener(const XMLString& type, EventListener* listener, bool useCapture)
{
if (_pEventDispatcher)
_pEventDispatcher->removeEventListener(type, listener, useCapture);
else
_pEventDispatcher = new EventDispatcher;
_pEventDispatcher->addEventListener(type, listener, useCapture);
}
void AbstractNode::removeEventListener(const XMLString& type, EventListener* listener, bool useCapture)
{
if (_pEventDispatcher)
_pEventDispatcher->removeEventListener(type, listener, useCapture);
}
bool AbstractNode::dispatchEvent(Event* evt)
{
if (eventsSuspended()) return true;
if (evt->type().empty()) throw EventException(EventException::UNSPECIFIED_EVENT_TYPE_ERR);
evt->setTarget(this);
evt->setCurrentPhase(Event::CAPTURING_PHASE);
if (_pParent) _pParent->captureEvent(evt);
if (_pEventDispatcher && !evt->isStopped())
{
evt->setCurrentPhase(Event::AT_TARGET);
evt->setCurrentTarget(this);
_pEventDispatcher->dispatchEvent(evt);
}
if (!evt->isStopped() && evt->bubbles() && _pParent)
{
evt->setCurrentPhase(Event::BUBBLING_PHASE);
_pParent->bubbleEvent(evt);
}
return evt->isCanceled();
}
void AbstractNode::captureEvent(Event* evt)
{
if (_pParent)
_pParent->captureEvent(evt);
if (_pEventDispatcher && !evt->isStopped())
{
evt->setCurrentTarget(this);
_pEventDispatcher->captureEvent(evt);
}
}
void AbstractNode::bubbleEvent(Event* evt)
{
evt->setCurrentTarget(this);
if (_pEventDispatcher)
{
_pEventDispatcher->bubbleEvent(evt);
}
if (_pParent && !evt->isStopped())
_pParent->bubbleEvent(evt);
}
void AbstractNode::dispatchSubtreeModified()
{
AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMSubtreeModified, this, true, false, 0);
dispatchEvent(pEvent.get());
}
void AbstractNode::dispatchNodeInserted()
{
AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMNodeInserted, this, true, false, parentNode());
dispatchEvent(pEvent.get());
}
void AbstractNode::dispatchNodeRemoved()
{
AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMNodeRemoved, this, true, false, parentNode());
dispatchEvent(pEvent.get());
}
void AbstractNode::dispatchNodeRemovedFromDocument()
{
AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMNodeRemovedFromDocument, this, false, false, 0);
dispatchEvent(pEvent.get());
}
void AbstractNode::dispatchNodeInsertedIntoDocument()
{
AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMNodeInsertedIntoDocument, this, false, false, 0);
dispatchEvent(pEvent.get());
}
void AbstractNode::dispatchAttrModified(Attr* pAttr, MutationEvent::AttrChangeType changeType, const XMLString& prevValue, const XMLString& newValue)
{
AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMAttrModified, this, true, false, pAttr, prevValue, newValue, pAttr->name(), changeType);
dispatchEvent(pEvent.get());
}
void AbstractNode::dispatchCharacterDataModified(const XMLString& prevValue, const XMLString& newValue)
{
AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMCharacterDataModified, this, true, false, 0, prevValue, newValue, EMPTY_STRING, MutationEvent::MODIFICATION);
dispatchEvent(pEvent.get());
}
bool AbstractNode::events() const
{
return _pOwner->events();
}
bool AbstractNode::eventsSuspended() const
{
return _pOwner->eventsSuspended();
}
void AbstractNode::setOwnerDocument(Document* pOwnerDocument)
{
_pOwner = pOwnerDocument;
}
} } // namespace Poco::XML